Active NPI 1497918940 Individual Practitioner Male Practitioner

Dr. Ryan James Buck , MD

Hospitalist • Chicago, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Ryan Buck, MD is a certified Hospitalist practicing in Chicago, IL. With approximately 19 years of clinical experience since graduating from Northwestern University Feinberg Medical School in 2007, Dr. Buck delivers high-quality medical care to the local community at 251 E HURON ST.

Dr. Buck is affiliated with Northwestern Medical Faculty Foundation and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, initial hospital care with moderate level of medical decision making, if using time, at least, initial hospital care with straightforward or low-level medical decision making, if using time, at least. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

251 E Huron St
Feinberg 16-738

Chicago, IL 606112908

Telephone 3129265924

Associated Practice Facility / Clinic

🏢 Northwestern Radiology Oncology Assoc Facility NPI 1831164052

Medicare Profile & Education

Medical School

Northwestern University Feinberg Medical School

Graduation Year

2007

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Hospitalist in Chicago, IL

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

19 Yrs +5.8 yrs vs City Avg

City Avg: 13.2 Yrs

State Avg: 17.6 Yrs

Regional Practice Density

431 Specialists

Practicing in Chicago, IL (1537 Statewide)

Telehealth Adoption Rate

5.3% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

65.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Buck (19 Years) 19 Yrs

Chicago Specialty Average (13.2 Years) 13.2 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	248	94	$217.00	$83.86
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	100	96	$613.00	$178.80
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	65	65	$420.00	$138.99
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	44	26	$311.00	$125.63
99239 Hospital discharge day management, more than 30 minutes	33	32	$320.00	$121.58
99238 Hospital discharge day management, 30 minutes or less	24	24	$216.00	$85.61

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	246	103	$217.00	$84.44
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	98	98	$420.00	$137.72
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	94	41	$311.00	$127.04
99238 Hospital discharge day management, 30 minutes or less	57	56	$216.00	$85.87
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	47	47	$613.00	$184.09
99231 Follow-up hospital inpatient care per day, typically 15 minutes	36	21	$119.00	$53.83

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	127	57	$311.00	$109.08
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	85	50	$217.00	$76.03
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	59	59	$613.00	$210.94
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	58	57	$420.00	$142.66
99239 Hospital discharge day management, more than 30 minutes	23	23	$320.00	$112.08
99238 Hospital discharge day management, 30 minutes or less	22	22	$216.00	$76.30
99221 Initial hospital inpatient care per day, typically 30 minutes	19	19	$312.00	$109.44
99219 Hospital observation care, typically 50 minutes	15	15	$405.00	$141.26

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	278	98	$311.00	$110.35
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	160	65	$217.00	$76.86
99239 Hospital discharge day management, more than 30 minutes	61	59	$320.00	$113.47
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	54	54	$613.00	$212.93
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	37	37	$422.35	$145.82
99238 Hospital discharge day management, 30 minutes or less	20	20	$216.00	$77.05
99219 Hospital observation care, typically 50 minutes	13	13	$405.00	$143.36
99221 Initial hospital inpatient care per day, typically 30 minutes	13	13	$312.00	$109.64

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	345	129	$311.00	$112.16
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	138	67	$217.00	$78.06
99239 Hospital discharge day management, more than 30 minutes	54	51	$320.00	$113.93
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	39	38	$613.00	$209.84
99217 Hospital observation care on day of discharge	28	28	$218.00	$78.64
99238 Hospital discharge day management, 30 minutes or less	25	25	$216.00	$78.89
99226 Subsequent observation care, typically 35 minutes per day	15	14	$312.00	$112.65
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	15	15	$420.00	$150.30

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	430	132	$311.00	$111.11
99239 Hospital discharge day management, more than 30 minutes	84	84	$320.00	$114.45
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	82	81	$613.00	$216.92
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	78	47	$217.00	$78.18
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	30	30	$422.90	$147.45
99217 Hospital observation care on day of discharge	24	24	$218.00	$78.33
99238 Hospital discharge day management, 30 minutes or less	18	18	$216.00	$78.32
99220 Hospital observation care, typically 70 minutes	14	13	$556.00	$197.81
99219 Hospital observation care, typically 50 minutes	13	13	$405.00	$145.69

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	379	116	$311.00	$110.46
99239 Hospital discharge day management, more than 30 minutes	71	68	$320.00	$113.77
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	54	54	$613.00	$215.84
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	30	18	$217.80	$77.33
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	29	29	$423.00	$145.98
99238 Hospital discharge day management, 30 minutes or less	13	13	$216.00	$77.48
99220 Hospital observation care, typically 70 minutes	12	12	$556.00	$197.65

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	326	119	$311.00	$110.88
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	72	26	$217.33	$76.43
99239 Hospital discharge day management, more than 30 minutes	62	62	$320.00	$113.60
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	58	57	$613.00	$215.95
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	30	30	$431.60	$143.70
99221 Initial hospital inpatient care per day, typically 30 minutes	18	18	$312.00	$109.66
99219 Hospital observation care, typically 50 minutes	15	15	$405.00	$138.03
99217 Hospital observation care on day of discharge	11	11	$218.00	$77.25

Medical Specialties & State Licenses

Hospitalist Primary Specialty

NUCC Taxonomy Code: 208M00000X

State License IL 036125102

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Hospital & Practice Group Affiliations

Northwestern Medical Faculty Foundation

20 S Clark, Chicago, IL 606031882

Phone: 3129266146

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners

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Doctor of Medicine (M.D.)

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Internal Medicine

NPI 1043506355

Doctor of Medicine (M.D.)

Dr. Jeffrey Merz , MD

Hospitalist

NPI 1063862985

Doctor of Medicine (M.D.)

Ritika Dhawan

Hospitalist

NPI 1073135646

Margaret Schiffhauer

Physician Assistant

NPI 1073145728

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

11 Historical Events

✅

NPI Profile Active May 24, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location May 24, 2017

Registered at 251 E HURON ST, FEINBERG 16-738, CHICAGO, IL 606112908 (Tel: 3129265924)

📍

Updated Business Mailing Address May 24, 2017

Registered at 3159 N SEMINARY AVE APT 307, CHICAGO, IL 606573359 (Tel: (773) 661-9197)

👤

Provider Name / Credentials Updated May 24, 2017

Recorded as RYAN BUCK, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 24, 2017

Hospitalist (License #036125102 in IL)

✅

NPI Profile Active July 04, 2008

NPI status registered as active in NPPES database

📍

Updated Practice Location July 04, 2008

Registered at 3159 N SEMINARY AVE APT 307, CHICAGO, IL 606573359 (Tel: 7736619197)

📍

Updated Business Mailing Address July 04, 2008

Registered at 3159 N SEMINARY AVE APT 307, CHICAGO, IL 606573359 (Tel: 7736619197)

👤

Provider Name / Credentials Updated July 04, 2008

Recorded as RYAN BUCK, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 04, 2008

Internal Medicine (License #125052782 in IL)

🟢

Initial NPI Registration & Enumeration July 04, 2008

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1497918940

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: July 04, 2008

Last Update: July 21, 2022

Sole Proprietor: No

Update or Correct Profile

Mailing Address

3159 N Seminary Ave Apt 307

Chicago, IL 606573359

Phone: 7736619197

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.